It's a ARM926EJ RISC SOC(System-On-Chip) made by Samsung seminconductor.
This chip is 14mm x 14mm size, FBGA package with ball pitch of 0.65mm. the S3C2416 chip is a 32/16-bit RISC cost-effective, low power, high performance micro-processor solution for general applications including the GPS Navigation and Mobile Phone markets. Additionally, in order to allow for lower system costs, higher performance and low power, the S3C2416 is fabricated using the 65nm low power CMOS process.